/* --- AbbasTV CSS Stylesheet --- */

:root {
  --bg-primary: #090d16;
  --bg-secondary: #111726;
  --bg-glass: rgba(22, 30, 49, 0.7);
  --bg-glass-hover: rgba(30, 41, 67, 0.85);
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-focus: #8b5cf6;
  
  --accent: #8b5cf6;
  --accent-rgb: 139, 92, 246;
  --accent-hover: #a78bfa;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.5);
  --shadow-accent: 0 0 20px rgba(139, 92, 246, 0.35);
  
  --font-ar: 'Cairo', sans-serif;
  --font-en: 'Outfit', sans-serif;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
}

/* --- Base Reset --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  outline: none;
}

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow: hidden;
}

body {
  font-family: var(--font-ar);
}

/* LTR override for English mode */
html[lang="en"] body {
  font-family: var(--font-en);
}

/* --- Ambient Background Glow --- */
.bg-grid-glow {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.08) 0%, transparent 40%);
  opacity: 0.8;
  pointer-events: none;
}

/* --- Scrollbar Customization --- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
}
::-webkit-scrollbar-thumb {
  background: var(--border-glass);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* --- App Container --- */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding: 16px;
  gap: 16px;
}

/* --- Header Styling --- */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 12px 24px;
  box-shadow: var(--shadow-lg);
  min-height: 70px;
  z-index: 10;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: 0.5px;
}

.logo-icon {
  color: var(--accent);
  filter: drop-shadow(0 0 8px rgba(139, 92, 246, 0.6));
}

.accent-text {
  color: var(--accent);
}

.live-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--danger);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: bold;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--danger);
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.9); opacity: 0.6; }
  50% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 8px var(--danger); }
  100% { transform: scale(0.9); opacity: 0.6; }
}

.header-search {
  position: relative;
  width: 40%;
  max-width: 500px;
}

.search-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
}
html[dir="rtl"] .search-icon { right: 16px; }
html[dir="ltr"] .search-icon { left: 16px; }

.header-search input {
  width: 100%;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  border-radius: 30px;
  font-size: 0.9rem;
  transition: var(--transition);
}
html[dir="rtl"] .header-search input { padding: 10px 45px 10px 20px; font-family: var(--font-ar); }
html[dir="ltr"] .header-search input { padding: 10px 20px 10px 45px; font-family: var(--font-en); }

.header-search input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.2);
  background: rgba(0, 0, 0, 0.4);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.control-btn {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.control-btn:hover {
  background: var(--bg-glass-hover);
  border-color: var(--accent);
  color: var(--accent-hover);
}

/* --- Layout Grid --- */
.main-layout {
  display: flex;
  flex: 1;
  gap: 16px;
  height: calc(100vh - 102px);
  overflow: hidden;
}

/* --- Sidebar Panel --- */
.sidebar-panel {
  width: 340px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  padding: 16px;
  gap: 14px;
  overflow: hidden;
  flex-shrink: 0;
}

.sidebar-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.2);
  padding: 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-glass);
}

.tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
  position: relative;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  background: var(--accent);
  color: var(--text-primary);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.25);
}

.tab-btn .badge {
  background: var(--danger);
  color: white;
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

.tab-content {
  display: none;
  flex-direction: column;
  flex: 1;
  gap: 12px;
  overflow: hidden;
}

.tab-content.active-tab-content {
  display: flex;
}

/* Form controls */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 600;
}

.custom-select-wrapper {
  position: relative;
  width: 100%;
}

.form-select {
  width: 100%;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: var(--transition);
}
html[dir="rtl"] .form-select { padding-left: 35px; font-family: var(--font-ar); }
html[dir="ltr"] .form-select { padding-right: 35px; font-family: var(--font-en); }

.form-select:focus {
  border-color: var(--border-focus);
  background: rgba(0, 0, 0, 0.4);
}

.select-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
  pointer-events: none;
}
html[dir="rtl"] .select-arrow { left: 14px; }
html[dir="ltr"] .select-arrow { right: 14px; }

/* Filter Box */
.filter-box {
  position: relative;
  width: 100%;
}

.filter-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-secondary);
}
html[dir="rtl"] .filter-icon { right: 12px; }
html[dir="ltr"] .filter-icon { left: 12px; }

.filter-box input {
  width: 100%;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  transition: var(--transition);
}
html[dir="rtl"] .filter-box input { padding: 8px 35px 8px 12px; font-family: var(--font-ar); }
html[dir="ltr"] .filter-box input { padding: 8px 12px 8px 35px; font-family: var(--font-en); }

.filter-box input:focus {
  border-color: var(--border-focus);
}

.channels-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 6px;
}

/* Channel list container */
.channel-list-container {
  flex: 1;
  overflow-y: auto;
  border-radius: var(--radius-sm);
}

.channel-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Channel Card */
.channel-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.03);
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.channel-card:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.channel-card.active {
  background: rgba(139, 92, 246, 0.1);
  border-color: var(--accent);
}

.channel-card-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  overflow: hidden;
}

.channel-logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: #1e293b;
  object-fit: contain;
  border: 1px solid var(--border-glass);
  flex-shrink: 0;
}

.channel-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow: hidden;
}

.channel-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.channel-group {
  font-size: 0.7rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.channel-card-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.fav-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  font-size: 0.95rem;
  transition: var(--transition);
}

.fav-btn:hover {
  color: var(--warning);
}

.fav-btn.is-fav {
  color: var(--warning);
}

.channel-quality {
  font-size: 0.6rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: bold;
  color: var(--text-secondary);
}

.no-results {
  text-align: center;
  color: var(--text-secondary);
  padding: 30px 10px;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* --- Player Container --- */
.player-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 16px;
  overflow: hidden;
}

/* Custom Video Player Wrapper */
.video-player-wrapper {
  position: relative;
  background: #000;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/9;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
}

#mainVideoPlayer {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

/* Player overlays */
.player-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  z-index: 5;
  transition: var(--transition);
}

.player-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

/* Spinner */
.loader-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--border-glass);
  border-top: 4px solid var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

#loaderMessage {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Play Overlay */
.play-overlay {
  background: rgba(0, 0, 0, 0.5);
  cursor: pointer;
}

.play-overlay-icon {
  font-size: 4rem;
  color: var(--text-primary);
  opacity: 0.8;
  transition: var(--transition);
}

.play-overlay:hover .play-overlay-icon {
  transform: scale(1.1);
  color: var(--accent-hover);
  opacity: 1;
}

/* Error Overlay */
.error-overlay {
  background: rgba(15, 10, 20, 0.92);
  padding: 30px;
  text-align: center;
}

.error-icon {
  font-size: 3rem;
  color: var(--danger);
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.error-overlay h3 {
  font-size: 1.2rem;
  color: var(--text-primary);
}

.error-overlay p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  max-width: 400px;
  line-height: 1.6;
}

.error-actions {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.action-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  transition: var(--transition);
}

.retry-btn {
  background: var(--accent);
  border-color: var(--accent);
}

.retry-btn:hover {
  background: var(--accent-hover);
}

.info-btn:hover {
  border-color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.05);
}

/* Custom Controls Bar */
.player-controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.4) 70%, transparent 100%);
  padding: 24px 16px 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 6;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

.video-player-wrapper:hover .player-controls,
.video-player-wrapper:focus-within .player-controls {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.controls-progress-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.live-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 800;
  color: #fff;
  background: var(--danger);
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}

.live-dot {
  width: 6px;
  height: 6px;
  background-color: #fff;
  border-radius: 50%;
  animation: blink 1.2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

.time-display {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-family: monospace;
}

.controls-main-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.controls-left, .controls-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.player-btn {
  background: transparent;
  border: none;
  color: #fff;
  opacity: 0.8;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.95rem;
  transition: var(--transition);
}

.player-btn:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.1);
  color: var(--accent-hover);
}

/* Volume Slider */
.volume-container {
  display: flex;
  align-items: center;
  gap: 6px;
}

.volume-slider {
  width: 70px;
  height: 4px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  transition: var(--transition);
}

.volume-slider::-webkit-slider-thumb {
  appearance: none;
  -webkit-appearance: none;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #fff;
  transition: var(--transition);
}

.volume-slider:hover::-webkit-slider-thumb {
  background: var(--accent);
  transform: scale(1.2);
}

/* Quality Selector */
.quality-selector-container {
  position: relative;
  display: inline-block;
}

.quality-menu {
  position: absolute;
  bottom: 45px;
  background: rgba(9, 13, 22, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 6px 0;
  min-width: 100px;
  box-shadow: var(--shadow-lg);
  z-index: 10;
  display: flex;
  flex-direction: column;
}
html[dir="rtl"] .quality-menu { left: 0; }
html[dir="ltr"] .quality-menu { right: 0; }

.quality-menu.hidden {
  display: none !important;
}

.quality-menu-item {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px 12px;
  font-size: 0.8rem;
  font-weight: bold;
  text-align: center;
  cursor: pointer;
  width: 100%;
  transition: var(--transition);
  font-family: inherit;
}

.quality-menu-item:hover, .quality-menu-item.active {
  background: var(--accent);
  color: #fff;
}

/* --- Active Channel Info Panel --- */
.channel-info-panel {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.info-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.channel-meta-main {
  display: flex;
  align-items: center;
  gap: 16px;
}

.info-logo {
  width: 50px;
  height: 50px;
  object-fit: contain;
  background: #1e293b;
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
}

.channel-meta-main h1 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.channel-badges {
  display: flex;
  gap: 8px;
}

.badge-tag {
  font-size: 0.65rem;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
  border: 1px solid var(--border-glass);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.fav-action-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: bold;
  transition: var(--transition);
}

.fav-action-btn:not(:disabled):hover {
  background: var(--bg-glass-hover);
  border-color: var(--warning);
  color: var(--warning);
}

.fav-action-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.fav-action-btn.active {
  border-color: var(--warning);
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

/* Diagnostics Header */
.diagnostics-section {
  border-top: 1px solid var(--border-glass);
  padding-top: 10px;
}

.diagnostics-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  transition: var(--transition);
}

.diagnostics-header:hover {
  color: var(--text-primary);
}

.diagnostics-header .arrow-icon {
  transition: transform 0.3s ease;
}

html[dir="rtl"] .diagnostics-header.open .arrow-icon { transform: rotate(-90deg); }
html[dir="ltr"] .diagnostics-header.open .arrow-icon { transform: rotate(90deg); }

.diagnostics-body {
  display: block;
  max-height: 500px;
  overflow: hidden;
  transition: max-height 0.4s ease-out, margin-top 0.3s ease;
}

.diagnostics-body.collapsed {
  max-height: 0;
}

.diagnostic-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  padding-top: 12px;
}

.diag-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.diag-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.diag-value {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.diag-value-wrapper {
  display: flex;
  align-items: center;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.diag-url-input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-family: monospace;
  padding: 6px 10px;
  width: 100%;
}

.diag-copy-btn {
  background: rgba(255, 255, 255, 0.03);
  border: none;
  border-left: 1px solid var(--border-glass);
  color: var(--text-secondary);
  padding: 6px 10px;
  cursor: pointer;
  transition: var(--transition);
}
html[dir="rtl"] .diag-copy-btn { border-left: none; border-right: 1px solid var(--border-glass); }

.diag-copy-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
}

.status-online { color: var(--success); }
.status-offline { color: var(--danger); }
.status-buffer { color: var(--warning); }

/* --- CORS Modal / Help Screen --- */
.modal-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.modal-wrapper.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(5, 5, 10, 0.85);
  backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 650px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.8);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  z-index: 10;
  animation: slideUp 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes slideUp {
  0% { transform: translateY(20px); opacity: 0; }
  100% { transform: translateY(0); opacity: 1; }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-glass);
}

.modal-header h2 {
  font-size: 1.1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
}

.modal-title-icon {
  color: var(--accent);
}

.modal-close-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.modal-close-btn:hover {
  color: var(--danger);
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  max-height: 70vh;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-intro {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.solution-card {
  display: flex;
  gap: 16px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 16px;
}

.sol-number {
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--accent-hover);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.sol-details {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}

.sol-details h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
}

.sol-details p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.extensions-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 6px 0;
}

.ext-link {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  color: var(--accent-hover);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
}

.ext-link:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.sol-note {
  font-size: 0.75rem !important;
  color: var(--warning) !important;
  font-weight: 600;
}

.modal-footer {
  padding: 12px 24px;
  border-top: 1px solid var(--border-glass);
  display: flex;
  justify-content: flex-end;
}

.modal-btn-close {
  background: var(--bg-glass-hover);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition);
}

.modal-btn-close:hover {
  border-color: var(--text-secondary);
}

/* --- Responsive Layout Rules --- */
@media (max-width: 992px) {
  .app-container {
    padding: 10px;
    gap: 10px;
  }
  
  .main-layout {
    flex-direction: column;
    height: auto;
    overflow-y: auto;
  }

  .sidebar-panel {
    width: 100%;
    height: 400px;
    flex-shrink: 0;
  }

  .player-container {
    flex: none;
    width: 100%;
  }
}

/* Mobile Bottom Navigation Styles */
.mobile-bottom-nav {
  display: none;
}

@media (max-width: 768px) {
  .app-container {
    padding-bottom: 80px; /* Make space for bottom navigation bar */
  }

  /* Pushing player to top and channel list to bottom on mobile */
  .main-layout {
    flex-direction: column-reverse;
    height: auto;
    overflow-y: visible;
  }

  .sidebar-panel {
    width: 100%;
    height: auto;
    min-height: 450px;
    flex: 1;
    overflow-y: visible;
  }

  /* Hide header settings button on mobile, it will be in the bottom nav */
  #settingsBtn {
    display: none !important;
  }

  /* Mobile Bottom Navigation Bar styling */
  .mobile-bottom-nav {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 65px;
    background: rgba(17, 23, 38, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-glass);
    justify-content: space-around;
    align-items: center;
    z-index: 90;
    box-shadow: 0 -5px 25px rgba(0, 0, 0, 0.6);
  }

  .nav-item {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    flex: 1;
    height: 100%;
    font-family: inherit;
  }

  .nav-item i {
    font-size: 1.25rem;
  }

  .nav-item:hover, .nav-item.active {
    color: var(--accent-hover);
  }

  .nav-item.active i {
    filter: drop-shadow(0 0 5px rgba(139, 92, 246, 0.5));
  }
}

@media (max-width: 600px) {
  .app-header {
    flex-direction: column;
    gap: 12px;
    padding: 12px;
    align-items: stretch;
  }

  .header-search {
    width: 100%;
    max-width: none;
  }

  .header-controls {
    justify-content: flex-end;
  }
  
  .diagnostic-grid {
    grid-template-columns: 1fr;
  }
}